{"id":11709,"date":"2025-05-28T14:19:08","date_gmt":"2025-05-28T06:19:08","guid":{"rendered":"https:\/\/www.zhangxinxu.com\/wordpress\/?p=11709"},"modified":"2025-05-28T14:19:08","modified_gmt":"2025-05-28T06:19:08","slug":"css-attr-function","status":"publish","type":"post","link":"https:\/\/www.zhangxinxu.com\/wordpress\/2025\/05\/css-attr-function\/","title":{"rendered":"\u9707\u60ca\uff0c\u6709\u751f\u4e4b\u5e74\u5c45\u7136\u770b\u5230CSS attr()\u5168\u5c5e\u6027\u652f\u6301"},"content":{"rendered":"

by zhangxinxu<\/a> from https:\/\/www.zhangxinxu.com\/wordpress\/?p=11709<\/a>
\n\u672c\u6587\u53ef\u5168\u6587\u8f6c\u8f7d\uff0c\u4f46\u9700\u8981\u4fdd\u7559\u539f\u4f5c\u8005\u3001\u51fa\u5904\u4ee5\u53ca\u6587\u4e2d\u94fe\u63a5\uff0cAI\u6293\u53d6\u4fdd\u7559\u539f\u6587\u5730\u5740\uff0c\u4efb\u4f55\u7f51\u7ad9\u5747\u53ef\u6458\u8981\u805a\u5408\uff0c\u5546\u7528\u8bf7\u8054\u7cfb\u6388\u6743\u3002<\/p>\n

\"css<\/p>\n

\u4e00\u3001\u771f\u7684\u662f\u6709\u751f\u4e4b\u5e74\u7cfb\u5217<\/h3>\n

\u8bf4\u5b9e\u8bdd\uff0cCSS attr()\u5168\u5c5e\u6027\u652f\u6301\u8fd9\u4e2a\u7279\u6027\u6211\u7b49\u4e86\u516d\u4e03\u5e74\u81f3\u5c11\u6709\u4e86\u3002\u4e4b\u524d\u8fd8\u4e3a\u5176\u5199\u4e86\u4e2aPolyfill\u5de5\u5177\uff1a\u201cPolyfill\u540a\u70b8\u5929\u7684CSS attr()\u65b0\u8bed\u6cd5<\/a>\u201d<\/p>\n

\u672c\u6765\u4ee5\u4e3a\u8fd9\u8f88\u5b50\u90fd\u4e0d\u4f1a\u770b\u5230\u6d4f\u89c8\u5668\u5bf9\u5176\u8fdb\u884c\u652f\u6301\u4e86\u3002<\/p>\n

\u4e07\u4e07\u6ca1\u60f3\u5230\uff0cChrome133\u7248\u672c\u5f00\u59cb\u5c45\u7136\u652f\u6301\u4e86\uff0c\u5b83\u5c45\u7136\u652f\u6301\u4e86\u3002<\/p>\n

\"attr()\u51fd\u6570\u7684\u517c\u5bb9\u6027\"<\/p>\n

\u5728\u8fc7\u53bb\uff0cattr()<\/code>\u51fd\u6570\u53ea\u80fd\u7528\u5728content\u5c5e\u6027\u4e2d\uff0c\u73b0\u5728\u6240\u6709\u7684CSS\u5c5e\u6027\u90fd\u652f\u6301\uff0c\u800c\u4e14\u8bed\u6cd5\u66f4\u52a0\u4e30\u5bcc\uff0c\u67d0\u79cd\u7a0b\u5ea6\u4e0a\uff0c\u53ef\u4ee5\u98a0\u8986\u73b0\u6709\u7684\u524d\u7aef\u5f00\u53d1\u4e60\u60ef\uff0c\u4e00\u70b9\u4e5f\u4e0d\u5938\u5f20\uff0c<\/p>\n

\u4e8c\u3001CSS\u4ee3\u7801\u51cf\u534a\uff0c\u5c5e\u6027\u4e3a\u738b<\/h3>\n

\u6709\u4e86attr()\u51fd\u6570\u7684\u5168\u652f\u6301\uff0c\u90a3\u4e48\u7c7b\u4f3ctailwind \u7684\u539f\u5b50\u7c7bCSS\u6846\u67b6\u90fd\u53ef\u4ee5\u9000\u51fa\u5386\u53f2\u821e\u53f0\u4e86\uff0c\u56e0\u4e3a\u6d4f\u89c8\u5668\u539f\u751f\u652f\u6301\u4e86\uff0c\u76f8\u5bf9\u4e8e\u56de\u5230\u4e86\u8fc7\u53bb\u6240\u6709CSS\u5c5e\u6027\u90fdHTML\u5c5e\u6027\u8bbe\u7f6e\u7684\u5e74\u4ee3\u3002<\/p>\n

\u4e8e\u662f\uff0c\u91cd\u590d\u6837\u5f0f\u7c7b\u540d\uff0c\u975e\u91cd\u590d\u6837\u5f0fHTML\u5c5e\u6027\u5916\u52a0\u4e00\u70b9\u70b9CSS\uff0c\u5f00\u53d1\u6548\u7387up\uff0c\u5f00\u53d1\u4ee3\u7801down\u3002<\/p>\n

\u4f8b\u5982\u4e4b\u524d\u8c03\u6574\u5143\u7d20\u4e4b\u95f4\u7684\u95f4\u8ddd\uff0c\u53ef\u80fd\u662f\u8fd9\u6837\u7684CSS\u539f\u5b50\u7c7b\uff1a<\/p>\n

.m0 { margin: 0; }\r\n.ml0 { margin-left: 0; }\r\n.ml1 { margin-left: .25rem; }\r\n.ml2 { margin-left: .5rem; }\r\n.ml3 { margin-left: .75rem; }\r\n.ml4 { margin-left: 1rem; }\r\n.mt0 { margin-top: 0; }\r\n.mt1 { margin-top: .25rem; }\r\n.mt2 { margin-top: .5rem; }\r\n.mt3 { margin-top: .75rem; }\r\n.mt4 { margin-top: 1rem; }\r\n.mr0 { margin-right: 0; }\r\n.mr1 { margin-right: .25rem; }\r\n.mr2 { margin-right: .5rem; }\r\n.mr3 { margin-right: .75rem; }\r\n.mr4 { margin-right: 1rem; }\r\n.mb0 { margin-bottom: 0; }\r\n.mb1 { margin-bottom: .25rem; }\r\n.mb2 { margin-bottom: .5rem; }\r\n.mb3 { margin-bottom: .75rem; }\r\n.mb4 { margin-bottom: 1rem; }<\/pre>\n
\u65e2\u5570\u55e6\uff0c\u53c8\u4e0d\u5168\uff0c\u5982\u679c\u662f\u66f4\u5927\u7684\u95f4\u8ddd\uff0c\u6216\u8005\u662f3px\uff0c5px\u8fd9\u79cd\u5c3a\u5bf8\u5c31\u65e0\u80fd\u4e3a\u529b\u3002<\/p>\n
attr()<\/code>\u51fd\u6570\u5168\u652f\u6301\u4e4b\u540e\uff0c\u90a3\u5c31\u7b80\u5355\u591a\u4e86\uff1a<\/p>\n
[m] { margin: attr(m px, 0); }\r\n[ml] { margin-left: attr(ml px, 0); }\r\n[mt] { margin-top: attr(ml px, 0); }\r\n[mr] { margin-right: attr(mr px, 0); }\r\n[mb] { margin-bottom: attr(mb px, 0); }<\/pre>\n
\u6b64\u65f6\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u4f7f\u7528\u81ea\u5b9a\u4e49\u7684ml,mr\u8fd9\u7c7bHTML\u5c5e\u6027\u968f\u4fbf\u5b9a\u4e49\u95f4\u8ddd\u5927\u5c0f\u4e86\uff0c\u4f7f\u7528\u975e\u5e38\u65b9\u4fbf\uff0c\u4f8b\u5982\uff1a<\/p>\n
<input><button ml=\"6\">\u6309\u94ae<\/button><\/pre>\n
\u8f93\u5165\u6846\u548c\u6309\u94ae\u4e4b\u95f4\u5c31\u67096px<\/code>\u7684\u95f4\u9699\u4e86\uff0c\u622a\u56fe\u6548\u679c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n
\"\u8f93\u5165\u6846\u548c\u6309\u94ae\u95f4\u9699\"<\/p>\n
\u7c7b\u4f3c\u7684\u8fd8\u6709\u989c\u8272\u3001\u80cc\u666f\u8272\u3001\u5706\u89d2\u7b49\u8fd9\u7c7b\u6837\u5f0f\u7684\u8bbe\u7f6e\uff1a<\/p>\n
button {\r\n  --bgcolor: attr(bgcolor type(*), #eee);\r\n  border: 1px solid color-mix(in srgb, var(--bgcolor), black);\r\n  background-color: var(--bgcolor);\r\n  border-radius: attr(radius type(*), 4px);\r\n  padding: .25em .75em;\r\n}<\/pre>\n
<button bgcolor=\"skyblue\" title=\"by zhangxinxu(.com)\">\u6309\u94ae<\/button>\r\n<button bgcolor=\"#00000040\" radius=\"1rem\">\u6309\u94ae<\/button>\r\n<button bgcolor=\"pink\" radius=\"50%\">\u6309\u94ae<\/button>\r\n<button bgcolor=\"orange\" radius=\"100% \/ 50%\">\u6309\u94ae<\/button><\/pre>\n
\u6b64\u65f6\u7684\u6e32\u67d3\u6548\u679c\u5982\u4e0b\u622a\u56fe\u6240\u793a\uff1a<\/p>\n
\"\u81ea\u5b9a\u4e49\u6309\u94ae\u6837\u5f0f\"<\/p>\n
\u4e09\u3001\u52a8\u6001URL\u4f5c\u4e3a\u80cc\u666f\u56fe\u663e\u793a<\/h3>\n
MDN\u6587\u6863\u4e0a\u663e\u793a\uff0c\u52a8\u6001URL\u5730\u5740\u4e0d\u80fd\u4f7f\u7528attr()\u663e\u793a\uff1a<\/p>\n
Therefore, you can’t use attr() to dynamically construct URLs<\/p><\/blockquote>\n
<!-- \u4e0b\u9762\u4ee3\u7801\u662f\u65e0\u6548\u7684 -->\r\n<span data-icon=\"https:\/\/example.org\/icons\/question-mark.svg\">help<\/span>\r\n<style>\r\n  span[data-icon] {\r\n    background-image: url(attr(data-icon));\r\n  }\r\n<\/style><\/pre>\n
\u5b9e\u9645\u4e0a\uff0c\u662f\u6709\u65b9\u6cd5\u53ef\u4ee5\u663e\u793a\u7684\uff0c\u6b64\u65b9\u6cd5\u5168\u4e2d\u56fd\u77e5\u9053\u7684\u4eba\uff0c\u76ee\u524d\u4e3a\u6b62\uff0c\u5728\u6211\u64b0\u5199\u672c\u6587\u4e4b\u524d\uff0c\u4f30\u8ba1\u4e0d\u8d85\u8fc7\u4e00\u53cc\u624b\u7684\u4eba\u3002<\/p>\n
\u90a3\u5c31\u662f\u4f7f\u7528image-set()<\/code>\u51fd\u6570\uff01<\/p>\n
\u56e0\u4e3aimage-set()<\/code>\u51fd\u6570\u662f\u552f\u4e00\u652f\u6301\u5b57\u7b26\u4e32\u4f5c\u4e3a\u56fe\u7247URL\u7684\u51fd\u6570\u3002<\/p>\n
<a href=\"https:\/\/image.zhangxinxu.com\/image\/study\/s\/hanyun.jpg\">\u56fe\u7247\uff1f<\/a>\r\n<style>\r\n[href$=\"jpg\"]::before { \r\n  content: ''; \r\n  display: block; \r\n  width: 256px; height: 192px; \r\n  background: image-set(attr(href)); \r\n  background-size: cover;\r\n}\r\n<\/style><\/pre>\n
\u6b64\u65f6\uff0c\u5728\u652f\u6301\u7684\u6d4f\u89c8\u5668\u4e0b\u9762\uff0c\u5c31\u4f1a\u6709\u5982\u4e0b\u56fe\u6240\u793a\u7684\u6548\u679c\uff1a<\/p>\n
<\/p>\n
\u5f88\u6709\u8da3\uff0c\u4e0d\u662f\u5417\uff1f<\/p>\n
\u56db\u3001\u9759\u5f85\u5168\u9762\u652f\u6301\u5427<\/h3>\n
\u4e1c\u897f\u80af\u5b9a\u662f\u4e2a\u641e\u4e1c\u897f\uff0c\u4f46\u662f\u6d4f\u89c8\u5668\u4e0d\u652f\u6301\u4e5f\u662f\u767d\u642d\u3002<\/p>\n
\u4e0d\u8fc7\u6211\u611f\u89c9\uff0cSafari\u548cFirefox\u5e94\u8be5\u4f1a\u652f\u6301\uff0c\u4e3a\u4ec0\u4e48\u5462\uff1f\u56e0\u4e3aattr()<\/code>\u51fd\u6570\u7684fallback\u8bed\u6cd5\u4ed6\u4eec\u90fd\u5df2\u7ecf\u652f\u6301\u4e86\u3002<\/p>\n
\"fallback\u8bed\u6cd5\u517c\u5bb9\u6027\"<\/p>\n
\u603b\u4e4b\uff0c\u968f\u7740CSS\u4e0d\u65ad\u53d1\u5c55\uff0cCSS\u8fd9\u95e8\u8bed\u8a00\u4f1a\u53d8\u5f97\u8d8a\u6765\u8d8a\u4e0d\u4e00\u6837\u7684\u3002<\/p>\n
\u4e0d\u8fc7\u95ee\u9898\u5728\u4e8e\uff0c\u7279\u6027\u8fc7\u76db\u4e86\u3002<\/p>\n
\u5982\u679c\u57fa\u672c\u7279\u6027\u5c31\u80fd\u6ee1\u8db3\u73b0\u6709\u7684\u5f00\u53d1\u9700\u6c42\uff0c\u5f00\u53d1\u4eba\u5458\u662f\u6ca1\u6709\u53bb\u5b66\u4e60\u7684\u52a8\u529b\u7684\uff0c\u4e5f\u4f1a\u963b\u788d\u6280\u672f\u672c\u8eab\u7684\u666e\u53ca\u3002<\/p>\n
\u5509\uff0c\u60f3\u90a3\u4e48\u591a\u5e72\u561b\u5462\uff1f<\/p>\n
\u6700\u540e\uff0c\u795d\u6e29\u5c11\u4e3b\u5728\u65b0\u4e16\u754c\u80fd\u6709\u597d\u7684\u7ed3\u5c40\u3002<\/p>\n
\"\u6e29\u5929\u4ec1\u548c\u4f8d\u5973\"<\/p>\n
\u672c\u6587\u4e3a\u539f\u521b\u6587\u7ae0\uff0c\u4f1a\u7ecf\u5e38\u66f4\u65b0\u77e5\u8bc6\u70b9\u4ee5\u53ca\u4fee\u6b63\u4e00\u4e9b\u9519\u8bef\uff0c\u56e0\u6b64\u8f6c\u8f7d\u8bf7\u4fdd\u7559\u539f\u51fa\u5904\uff0c\u65b9\u4fbf\u6eaf\u6e90\uff0c\u907f\u514d\u9648\u65e7\u9519\u8bef\u77e5\u8bc6\u7684\u8bef\u5bfc\uff0c\u540c\u65f6\u6709\u66f4\u597d\u7684\u9605\u8bfb\u4f53\u9a8c\u3002
\n\u672c\u6587\u5730\u5740\uff1ahttps:\/\/www.zhangxinxu.com\/wordpress\/?p=11709<\/a><\/p>\n
\uff08\u672c\u7bc7\u5b8c\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"
\"css<\/p>\n
\u6ca1\u60f3\u5230\u6709\u751f\u4e4b\u5e74\u53ef\u4ee5\u770b\u5230\u8db3\u4ee5\u98a0\u8986\u73b0\u6709\u5f00\u53d1\u6a21\u5f0f\u548c\u4e60\u60ef\uff0c\u540a\u70b8\u5929\u7684attr()\u51fd\u6570\u88ab\u5168CSS\u5c5e\u6027\u652f\u6301\uff0c\u5c5e\u6027\u9009\u62e9\u5668\u8981\u96c4\u8d77\u4e86\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[1518,365,1027,864],"_links":{"self":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/11709"}],"collection":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/comments?post=11709"}],"version-history":[{"count":5,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/11709\/revisions"}],"predecessor-version":[{"id":11716,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/11709\/revisions\/11716"}],"wp:attachment":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/media?parent=11709"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/categories?post=11709"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/tags?post=11709"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}